Using Icemark you can effortlessly identify your images from many others. Just add your personal watermark to the image, so you always know which images are yours. The added watermark is invisible and its detection is possible only by having the key, which only you have. Icemark is necessary for everyone, who works with graphics images and wants to protect their copyright. Main features
Custom watermark intensity - the watermark is embedded with varied intensity so that the user can choose between how unsusceptible and how perceptibility the watermark is.
Unlimited number of watermarks - the license allows you to add an unlimited number of watermarks.
Batch Processing - batch add invisible watermark to images easily.
Highly unsusceptible to image changes - the watermark is unsusceptible to JPG compression, geometric distortions, cropping, etc.
"Blind" detection - the original image is not needed in order to detect the watermark.
Key protection - it is impossible to detect the watermark without a key.
Supporting different formats - the software supports the following formats: JPEG, TIFF, BMP, PNG, TGA, MNG, RAS, RAW, JP2, JPC, PCX.
Supporting small images - it is possible to embed a watermark to an image of 40x40 pixels and larger.
High performance - the software is written totally in the C++ language, which ensures its high performance.

The license of this software is Free Trial Software, the price is $49.95, you can free download and get a free trial.